Re: wildcards and n-send NAPTRs

On 26 Jun 2008, at 10:42, Roy Arends wrote:

> I'd like us to .... come up with proper technical arguments.

OK Roy.

Could the proponents of n-send please explain why the semantics of  
wildcarding have to undergo further complication by making them  
conditional on the RDATA of an existing resource record? Not ony that,  
they're conditional on a subtype of the RDATA. This goes to the core  
of the stability of the DNS protocol. It's incumbent on those  
proposing this change to explain that it won't break anything or  
require yet more corner cases in wildcard handling/processing by  
servers, resolvers and end applications. Saying "we're doing this in  
private between consenting adults" is not an answer.

Saying n-send SHOULD NOT use wildcards is all very well. But what if  
someone does do that? Even behind closed doors? What operational  
impact would that have? What sort of action would those DNS  
implementations need to take? Will it require extra code? If so, where?